Ensure your USB cables are in top condition with this advanced USB Cable Tester. Featuring a 2.4 in. high-definition color display, this tester allows you to easily switch between function pages to view real-time detailed status of the cable, including internal resistance, power delivery efficiency, and cable quality. It reads eMarker chip parameters in Type-C cables, providing detailed performance information such as maximum current, voltage, and data transfer rates. This helps you fully understand cable capabilities and ensure safe, efficient device usage. The tester can accurately identify and verify USB cable versions, including USB 2.0 and USB 3.2, and integrates PD 3.0 and PD 3.1 protocol detection functions. This enables quick verification of whether the cable supports the latest PD 3.0/3.1 standards, ensuring the cable meets high-power charging and fast data transfer requirements. With its wide compatibility, this tester works with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B cables, making it a versatile tool for testing a wide range of USB cables. The black button on the left allows you to flexibly switch the power supply mode, supporting the use of AAA battery or Type C 5V to stably supply power to the USB tester. Keep your devices safe and efficient with this reliable USB Cable Tester.